Re: [Paparazzi-devel] Solved: calibrating IR sensors

[Martin P]

Hello, 

do you have a top-ten-list for the most stupid mistakes? 
Here is my entry: 
Plugged IR-H the wrong way. The cable is not symmetrical, i.e. there is 
a-sensor- end and an autopilot-end. This is why I saw crazy values for the 
neutrals. Fortunately, there was no harm done. 

Btw, the orientation of the horizontal sensor seems to have changed. 
I did it like seen here 
https://service.gmx.net/de/cgi/derefer?TYPE=3&DEST=http%3A%2F%2Fwww.rcgroups.com%2Fforums%2Fshowpost.php%3Fp%3D11632208%26postcount%3D1183
but I had to flip it upside-down and turn it 90°. Or can the orientation be 
changed by software? 

Greetings, Martin 

-------- Original-Nachricht --------
> Datum: Thu, 09 Jul 2009 11:12:08 +0200
> Von: "Martin P" <address@hidden>
> An: address@hidden
> Betreff: Re: [Paparazzi-devel] calibrating IR sensors

> > > I just tried to calibrate the IR sensors and I am a little confused. 
> 
> >  There is a confusion here:
> >  - the readings should be around 0 during the cupboard test;
> >  - then, the neutrals in the airframe file should be around 512
> > 
> > --Pascal
> 
> Thanks a lot! 
> 
> The readings were so far away from correct that they didn't give me a
> clue. And my neutrals will be very far from 512. 
> 
> Btw, the little black boxes in which the XBee modems came are great for
> the cupboard test (as long as the sensors are not yet mounted to the
> airframe). 
> 
> Thanks again, Martin 
> 
> 
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